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Thread: 2017 Spare Tire Mod for U.S.

  1. #91
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    2019 CX-5 White Pearl Sig

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    Went scrounging at the junkyard today hoping to find a first gen CX-7 or 9 with the right size spare but no luck. I guess that's a good thing that there were NO Mazdas to be found. Now if I wanted something from a Dodge/Chrysler suv there were dozens of those to look at. I did manage to find three Hyundai Santa Fe vehicles, two were missing the spares but the third, an '06, was still intact with it's T165/90R17 spare. I was hoping to avoid a tire that old but figured if the price was right I could at least use the rim. Turns out the yard only wanted $20 for it so I brought it home. It's actually a nice looking wheel, hopefully something I'll never use but I do like the style, and being an alloy it only weighs four pounds more than the smaller oem spare. It actually pains me to have to replace the tire though, it's never been run, sidewalls look like new, and had 55psi when I got it. Oh well, what's another hundred at this point?







    The original Mazda securing bolt was a little too short and the other supplied bolt was too long so a trip to the hardware store got me the needed coupling nut and M8 1.25 pitch bolt. I cut enough threads off the shorter oem bolt to allow the coupling nut to bottom out, assembled with red thread locker, and ended up with a 6.5" bolt which works well for that size spare and Bose combo.



    Dr. Electron was spot-on with his measure of reducing the foam blocks by 3/4". It was easy to accurately cut them to the proper size by first marking the blocks with a Sharpie and then making the cuts with an electric carving knife. I want to thank Dr. E and minnesotaart for doing the research on viable options to finding an oem Mazda wheel.

  2. #92
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    Hi all,
    I was inspired to join because I recently had the "pleasure" of hitting a chunk of buckled pavement that destroyed my "19 CX-5 Reserve front left rim/tire.
    I pulled over onto a triangle patch of asphalt sandwiched between an off ramp and the regular flow of highway traffic; I just wanted to get out of there fast.
    To my amazement, and that of a Wisconsin State Trooper, I(we) could not understand why the spare would not fit on the front. Yes we both know where the spare SHOULD be mounted, but again...get the heck out of there. In this situation all logic went out the window so duh swapping tires should have been a thought.
    I was 4-5 miles from home 1 mile from a dealership. Come on man.
    Had it towed to the dealership and guess what, they spent 20 minutes trying to figure out why the spare wouldn't fit on the front. Diagnoses: brake caliper most be too big for the spare. How about the entirely wrong spare in the first place.
    Anyway, thanks to all of you who took the time here to help all Mazda owners who should be replacing their unusable spare tires.
    As a side note I filed a complaint with NHTSA, only time will tell.

  3. #93
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    2014 Mazda CX-5 GT AWD w/Tech

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    Wow! That's a different issue than what this post was originally about. It was noticed that the diameter of the spare was way smaller than the other tires, so that's why some of use got a bigger one. But this is the first time anybody has said it just couldn't even be mounted! Scary!

  4. #94
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    2019 Mazda CX-5 Signature

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    Quote Originally Posted by mazdaman1 View Post
    As a side note I filed a complaint with NHTSA, only time will tell.
    Quote Originally Posted by minnesotaart View Post
    But this is the first time anybody has said it just couldn't even be mounted! Scary!
    Mazda will call it a "Safety feature", preventing the user from mistakenly installing the compact spare on the front wheels.
    Last edited by St1ngy; 08-04-2019 at 03:46 PM.

  5. #95
    Structural Member shadonoz's Avatar
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    2017 CX-5 GT AWD Tech

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    Has anyone ever heard of this before on ANY car?

  6. #96
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    Mazda CX-5 GT

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    From my 2017 Owner's Manual:

    "Do not install the temporary spare tire on the front wheels (driving wheels): Driving with the temporary spare tire on one of the front driving wheels is dangerous. Handling will be affected. You could lose control of the vehicle, especially on ice or snow bound roads, and have an accident. Move a regular tire to the front wheel and install the temporary spare tire to the rear."

    Odd that it doesn't say the spare won't even fit on the front, so don't even try!
    Last edited by SweetPete; 08-04-2019 at 06:26 PM.

  7. #97
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    2019 Cx-5 sport

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    ok, so do all 2019 cx5 owners need to try and mount the spare tire ?
    or is this bull$shit......

  8. #98
    Registered Member yrwei52's Avatar
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    2016 Mazda CX-5 GT AWD w/Tech

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    Arrow 2017 Spare Tire Mod for U.S.

    Quote Originally Posted by mazdaman1 View Post
    Hi all,
    I was inspired to join because I recently had the "pleasure" of hitting a chunk of buckled pavement that destroyed my "19 CX-5 Reserve front left rim/tire.
    I pulled over onto a triangle patch of asphalt sandwiched between an off ramp and the regular flow of highway traffic; I just wanted to get out of there fast.
    To my amazement, and that of a Wisconsin State Trooper, I(we) could not understand why the spare would not fit on the front. Yes we both know where the spare SHOULD be mounted, but again...get the heck out of there. In this situation all logic went out the window so duh swapping tires should have been a thought.
    I was 4-5 miles from home 1 mile from a dealership. Come on man.
    Had it towed to the dealership and guess what, they spent 20 minutes trying to figure out why the spare wouldn't fit on the front. Diagnoses: brake caliper most be too big for the spare. How about the entirely wrong spare in the first place.
    Anyway, thanks to all of you who took the time here to help all Mazda owners who should be replacing their unusable spare tires.
    As a side nte I filed a complaint with NHTSA, only time will tell.


    Apparently this's an oversight by Mazda who forgot to use bigger spare wheel to accommodate bigger dual-piston front calipers on 2.5T.

    Or may be Mazda is trying to save money not to use different spare wheel even though they fully aware the already-too-small spare tire won't fit the front?

    Glad you reported this issue to NHTSA.

  9. #99
    Registered Member yrwei52's Avatar
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    2016 Mazda CX-5 GT AWD w/Tech

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    Arrow 2017 Spare Tire Mod for U.S.

    Quote Originally Posted by St1ngy View Post
    Mazda will call it a "Safety feature", preventing the user from mistakenly installing the compact spare on the front wheels.
    If Mazda claims this's a "safety feature", should I file a complaint with NHTSA, because I can fit my already-too-small spare tire at front?

  10. #100
    Registered Member yrwei52's Avatar
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    2016 Mazda CX-5 GT AWD w/Tech

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    Arrow 2017 Spare Tire Mod for U.S.

    Quote Originally Posted by SweetPete View Post
    From my 2017 Owner's Manual:

    "Do not install the temporary spare tire on the front wheels (driving wheels): Driving with the temporary spare tire on one of the front driving wheels is dangerous. Handling will be affected. You could lose control of the vehicle, especially on ice or snow bound roads, and have an accident. Move a regular tire to the front wheel and install the temporary spare tire to the rear."

    Odd that it doesn't say the spare won't even fit on the front, so don't even try!
    Don't worry, your smaller-diameter spare tire will fit the front. Just remember don't drive too long especially if your CX-5 is an AWD.

    Only the 2019 GTR and Sig with 2.5T have this issue as they have bigger dual-piston front calipers.

  11. #101
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    Just bought a 2012 CX-7 spare (18x4) for $50 shipped off ebay. So at least I'll have the wheel. I doubt the tire will have much useful life.

  12. #102
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    2019 Mazda CX-5 Signature

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    I can't remember ever getting a flat or puncture on the fronts. I always seem to pick-up nails in the right rear. So for me (2019 Sig) it is more an issue of protecting the AWD gearing.
    Last edited by St1ngy; 08-05-2019 at 07:28 AM.

  13. #103
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    2014 Mazda CX-5 GT AWD w/Tech

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    I'm sure Mazda's response will be to eliminate the spare and just supply a can of fix-a-flat in the spare tire area!

  14. #104
    Resident Curmudgeon brillo54's Avatar
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    2016 Mazda CX-5 GT FWD w/Tech Soul Red/Parchment

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    They wouldn't be the first to do that. That's all my sister-in law's '16 Jeep has.

  15. #105
    Work in Progress sm1ke's Avatar
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    Ideally you would do as the manual says:

    "Do not install the temporary spare tire on the front wheels (driving wheels): Driving with the temporary spare tire on one of the front driving wheels is dangerous. Handling will be affected. You could lose control of the vehicle, especially on ice or snow bound roads, and have an accident. Move a regular tire to the front wheel and install the temporary spare tire to the rear."

    That said, I can appreciate wanting to get out of that situation quickly. In that case, having a spare that also fits on the front would have been ideal. I suspect that Mazda simply chose not to spend the extra money on a spare that accommodates the front brakes, and intends to fall back on the statement above when questioned.

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